PR 6-4A Periodic inventory by three methods obj, 2, 3The beginning inventory for Midnight Supplies and data on purchases and sales for a three-month period are shown in Problem 6-1A. Instructions 1. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the first-in, first-out method and the periodic inventory system. 2. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the last-in, first-out method and the periodic inventory system. Answer 3. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the weighted average cost method and the periodic inventory system. (Round the weighted average unit cost to the nearest cent.)